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Finding the Fourth Proportional to 721,540.38, 995,657.92 and 488,493.27

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Solution

The fourth proportional to 721,540.38, 995,657.92 and 488,493.27 is: 674,074.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,540.38 : 995,657.92 = 488,493.27 : x
  2. Step 2: Convert to fraction form
    721,540.38/995,657.92 = 488,493.27/x
  3. Step 3: Cross multiply
    721,540.38x = 995,657.92 × 488,493.27
  4. Step 4: Simplify right side
    721,540.38x = 486,372,193,142.20
  5. Step 5: Solve for x
    x = 486,372,193,142.20/721,540.38
  6. Step 6: Final answer
    x = 674,074.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.